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what is diffrence between analog card and digital card in
plc.how analog card work,Please explain in detail.Please
send it on abhi_vyas@sify.com
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Answer Posted / ytd
There are two types of communication signals PlC is
handling either to field instruments ( O/p) or from field
instruments ( i/p). This digital signals are used as
control on / off operation in o/p card and read present
status in the form of On or OFF.
Digital signals are in the form of binary logic either
Present ( High may be 5 V / 24 V) or Low ( o V)
In analogue form of signal It can be 0 to 10 V in descrite
values ( o to 100%) or 4 to 20 MA) These analogue signal
received from Load cells, Transducers or from position
control devices.
| Is This Answer Correct ? | 34 Yes | 7 No |
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